Resource Estimation of Freight Car’s Brake Pads in Operating Conditions
DOI:
https://doi.org/10.15802/stp2021/252036Keywords:
brake pad; wear; brake rigging; freight car; analysis; model; statistical research; parameter, brake pad, wear, brake rigging, freight car, analysis, model, statistical research, parameterAbstract
Purpose. This research is aimed at substantiation and development of the correct for practical use model of service life exhaustion of brake pads of freight cars based on mass inspections of their wear using the elements of the statistical conclusions’ theory. Methodology. Production research conducted in several stages, allowed identifying and accumulating sufficient statistics on the malfunctions, failures or defects of the elements of the brake rigging. Statistics on determining the service life of composite brake pads before their complete failure were carried out for a typical and modernized design of the brake rigging of freight cars. The well-known provisions of the theory of statistical conclusions, which are applied to technical brake systems of units and elements of freight cars, were used as research methods. Findings. Empirical characteristics are obtained as a result of current inspections of wear of composite brake pads of brake rigging. This made it possible to achieve more reliable results from the law of random variables distribution concerning the wear of composite brake pads – to limit the service life of pads on the run under conditions of their safe operation. The proposed model of the density distribution function of random variables for composite brake pads allows high accuracy estimating such an important characteristic as the resource threshold. This make it possible to predict the brake pads performance and determine the efficiency of brake rigging of freight car bogies. Originality. For the first time, a correct statistical wear model of composite brake pads of freight cars has been proposed. Based on the developed model the occurrence chronology of clinodual wear of composite brake pads and its influence on a resource of their work in operating conditions is investigated. Field research on experimental bogies of freight cars confirmed that the service life of composite pads has increased by an average of 19% for upgraded brake rigging compared to typical ones. Practical value. The obtained positive results will be taken into account in the future to solve problematic technical issues related to non-standard wear of composite brake pads in the freight cars’ bogies of Ukrzaliznytsia JSC, which will allow extending the interrepair periods.
References
Analіz stanu bezpeki rukhu v strukturі AT «Ukrzalіznitsya» u 2019 rotsі. Akcionerne tovarystvo «Ukrajinsjka zaliznycja» Departament bezpeki rukhu. (2019). Kyiv. (іn Ukrainian)
Bakardzhyiev, R. O., & Komarov, A. O. (2015). Preliminary assessment and data processing in regression anlysis. Collected Works of Kirovohrad National Technical University. Machinery in agricultural production, industry machine building, automation, 28, 255-260. (іn Ukrainian)
Gmurman, V. Ye. (2003). Teoriya veroyatnostey i matematicheskaya statistika: uchebnoe posobie dlya vuzov. Moscow: Vysshaya shkola. (in Russian)
Grebennikova, I. V. (2015). Metody matematiches koyobra botkieksper imentalny khdannykh: uchebno-metodicheskoe posobie. Yekaterinburg: Uralski yuniversitet. (in Russian)
Zharov, A., & Makas, A. (2009). Methods of statistical processing results of brake distance measurement when evaluating efficiency of rolling stock brake systems. Vestnik VNIIZHT, 5, 29-33. (in Russian)
Instruktsiia z ekspluatatsi ihalmruk homohos kladun azaliznytsiakh Ukrainy: TsT-TsV-TsL-0015, No. 264-Ts. (2004). Kyiv. (іn Ukrainian)
Koptovec, A. N. (2014). Identification of mine locomotive brake state in terms of structural uncertainty. Geo-Technical Mechanics, 119, 241-246. (in Russian)
Koropets, P. A., Chernikov, V. D., & Kostiukevych, A. I. (2010). Pro neriv nomirnyi znosruk homy khfryktsiinykh par. Visnik of the Volodymyr Dahl East Ukrainian national university, 5(147), 41-45. (іn Ukrainian)
Lamnauer, N. Y. (2014). Machine parts assembly method, which provides connection accuracy. Eastern-European Journal of Enterprise Technologies, 6(7(72)), 45-49. DOI: https://doi.org/10.15587/1729-4061.2014.29321 (in Russian)
Lamnauer, N. Y. (2020). About assessing the accuracy of manufacturing technology of parts by the parameter of linear size. Engineering, 25, 114-120. DOI: https://doi.org/10.32820/2079-1747-2020-25-114-120 (іn Ukrainian)
Lamnauer, N. Y., & Ptashnyi, O. D. (2021). Grading the quality of manufacturing technologies of machineparts based on the assessment of the corrected variance. Engineering, 27, 22-28. (іn Ukrainian)
Pavlyukov, A. E., Cherepov, O. V., & Shalupina, I. P. (2017). Brake shoe of freight wagon: analysis of damage and factors affecting the brake power. Herald of the Ural State University of Railway Transport, 4(36), 4-11. DOI: https://doi.org/10.20291/2079-0392-2017-4-4-11 (in Russian)
Ravlyuk, V. G., & Nechvoloda, S. I. (2017). UA Patent № 121889 Ukrainskyi instytut intelektual noivlasnosti (Ukrpatent). (іn Ukrainian)
Ravlyuk, V. G. (2019). Investigation of features of dual wear of pads in brake system of freight cars. Science and Transport Progress, 2(80), 111-126. DOI: https://doi.org/10.15802/stp2019/166114 (іn Ukrainian)
Ravlyuk, V. G., Ravlyuk, M. G., & Kirichenko, I. K. (2020). Statistical processing of brake pads wear parameters of freight cars. Science and Transport Progress, 2(86), 74-91. DOI: https://doi.org/10.15802/stp2020/203103 (іn Ukrainian)
Ravliuk, V. H., Ravliuk, M. H., Kyrychenko, I. K., Lamnauer, N. Y., & Melnychuk, A. K. (2020). Probability and statistical model of wearing of brake pads of freight cars. Science and Transport Progress, 5(89), 116-133. DOI: https://doi.org/10.15802/stp2020/217633
Rozrobka konstruktors'ko-tekhnolohichnoyi dokumentatsiyi na provedennya modernizatsiyi hal'-mivnykhvazhil'nykh peredach vizkiv vantazhnykh vahoniv. (2012). Zvit pro NDR (zaklyuch.): Ukrajinsjka derzhavna akademija zaliznychogho transportu. Kharkiv. (іn Ukrainian)
Tuluzin, S. V., & Gorskiy, D. V. (2015). Performance evaluation of bogie brake rigging in a freight car at various stages of brake blocks and wheels wear. Vestnik VNIIZhTa, 2, 38-44. (in Russian)
Gorobchenko, O., & Tkachenko, V. (2019). Statistical analysis of locomotives traction motors performance. MATEC Web of Conferences, 287, 1-5.DOI: https://doi.org/10.1051/matecconf/201928704002 (in English)
Lamnauer, N., Kupriyanov, O., Skorkin, A., & Kondratyuk, O. (2020). A Probabilistic-Statistical Model of Durability of Parts Under Cyclic Loading. Lecture Notes in Mechanical Engineering, 285-294. DOI: https://doi.org/10.1007/978-3-030-50794-7_28 (in English)
Leng, L., & Zhu, W. (2019). Compound Regression and Constrained Regression: Nonparametric Regression Frameworks for EIV Models. The American Statistician, 74(3), 226-232. DOI: https://doi.org/10.1080/00031305.2018.1556734 (in English)
Ravlyuk, V., Elyazov, İ., Afanasenko, I., & Ravliuk, M. (2020). Determination of parameters of abnormal wear of brake pads of freight cars. E3S Web of Conferences, 166, 1-7. DOI: https://doi.org/10.1051/e3sconf/202016607003 (in English)
Sarma, K. V. S., & Vardhan, R. V. (2018). Multivariate Statistics Made Simple. A Practical Approach. New York. DOI: https://doi.org/10.1201/9780429465185 (in English)
Sharma, B. (2018). Processing of data and analysis. Biostatistics and Epidemiology International Journal, 1(1), 3-5. DOI: https://doi.org/10.30881/beij.00003 (in English)
Sinitsyn, V. V., Kobishchanov, V. V. (2020). Braking system for bogie successive braking of freight cars. Bulletin of the Bryansk State Technical University, 2020(3), 21-28. DOI: https://doi.org/10.30987/1999-8775-2020-3-21-28 (in Russian)
Thrane, C. (2019). Applied Regression Analysis. Doing, Interpreting and Reporting. London. DOI: https://doi.org/10.4324/9780429443756 (in English)
Vakkalagadda, M. R. K., Srivastava, D. K., Mishra, A., & Racherla, V. (2015). Performance analyses of brake blocks used by Indian Railways. Wear, 328-329, 64-76. DOI: https://doi.org/10.1016/j.wear.2015.01.044 (in English)
Vineesh, K. P., Vakkalagadda, M. R. K., Tripathi, A. K., Mishra, A., & Racherla, V. (2016). Non-uniformity in braking in coaching and freight stock in Indian Railways and associated causes. Engineering Failure Analysis, 59, 493-508. DOI: https://doi.org/10.1016/j.engfailanal.2015.11.023 (in English)
Zhang, Y., & Zhang, M. (2018). The application status of unit brakes on metro vehicles in China. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), 3(15), 17-23. (in English)
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright and Licensing
This journal provides open access to all of its content.
As such, copyright for articles published in this journal is retained by the authors, under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0). The CC BY license permits commercial and non-commercial reuse. Such access is associated with increased readership and increased citation of an author's work. For more information on this approach, see the Public Knowledge Project, the Directory of Open Access Journals, or the Budapest Open Access Initiative.
The CC BY 4.0 license allows users to copy, distribute and adapt the work in any way, provided that they properly point to the author. Therefore, the editorial board of the journal does not prevent from placing published materials in third-party repositories. In order to protect manuscripts from misappropriation by unscrupulous authors, reference should be made to the original version of the work.
